diff options
| author | Steve Markgraf <steve@steve-m.de> | 2010-03-11 22:16:22 +0100 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2010-03-12 10:54:56 +0800 |
| commit | a13a4fda926aa272e55964c8f86cb31fb4065995 (patch) | |
| tree | 7f0588ee586557e1f5c0694af980ee578fe718b4 | |
| parent | 5c89c3573037c79975956459d86d187a51b96267 (diff) | |
uwire: add a chip-select for CS0, needed by the J100i display
Signed-off-by: Steve Markgraf <steve@steve-m.de>
| -rw-r--r-- | src/target/firmware/calypso/uwire.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/target/firmware/calypso/uwire.c b/src/target/firmware/calypso/uwire.c index ebdd2778..b79d9f38 100644 --- a/src/target/firmware/calypso/uwire.c +++ b/src/target/firmware/calypso/uwire.c @@ -94,6 +94,10 @@ int uwire_xfer(int cs, int bitlen, const void *dout, void *din) printd("uwire_xfer(dev_idx=%u, bitlen=%u\n", cs, bitlen); + /* select the chip */ + writew(UWIRE_CSR_IDX(0) | UWIRE_CSR_CS_CMD, UWIRE_REG(REG_CSR)); + _uwire_wait(UWIRE_CSR_CSRB, 0); + if (dout) { if (bitlen <= 8) tmp = *(uint8_t *)dout; @@ -122,6 +126,9 @@ int uwire_xfer(int cs, int bitlen, const void *dout, void *din) else if (bitlen <= 16) *(uint16_t *)din = tmp & 0xffff; } + /* unselect the chip */ + writew(UWIRE_CSR_IDX(0) | 0, UWIRE_REG(REG_CSR)); + _uwire_wait(UWIRE_CSR_CSRB, 0); printd(")\n"); |